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Description de Maa (1963) :
Body slender. Postclypeus never vertically produced into head process. Upper portion of pleurostome as broad as or narrower than basal segment of antenna, Bye moderately swollen, Crown anteriorly broadly rounded, seldom subangularly produced forward; occipital margin usually weakly sinuate at middle; antennal ledge in vertical view of crown, gently curved; ocelli more or less closer ta eyes than to each other. Pronotum gently convex, more or less broader than long; lateral angle seldom produced into spreading horizontal lamina; posterior angle variable; anterolateral margin longer or about as long as posterolateral margin, Scutellum often with distinct "neck" region in profile; scutellar process slender, as long as or longer 1han (seldom slightly shorter than) scutellum proper, originating from upper end of postero-inferior margin of the latter; scutellar sulcus usually narrow and sha1low, Tegmen about 3x as long as broad; discoidal cell 1.5-3.5x as long as broad, never longer than tegminal breadth; claval vein branched or unbranched. Cu (longitudinal vein 5) of wing unbranched, Hind leg slender; tibia lacking lateral spine; inner apical lobes of tarsomeres much longer than outer ones. Apical lobe of ♂ pygofer narrowly rounded.